Xandra spent less than $110. She already bought a toy helicopter at $29.80. She tried to use up all her money and bought another two items.
- Name the two items. Give your answers in letters. (Eg a, b)
- What was the total cost for the two items?
(a)
Estimated amount that Madam Xandra left to spend on the 2 items
= 110 - 29.80
= $80.20
Round off each number to the nearest tens for a more accurate estimation.
(a) Cube: $17.90 ≈ $20
(b) Guitar: $52.60 ≈ $50
(c) Cushion: $25.60 ≈ $30
(d) Ball: $39.40 ≈ $40
50 + 30 = 80
80 is nearest to 80.20.
Total amount spent on the two items
= 52.60 + 25.60
= $78.20
To use up all her money to buy another 2 items, she cannot exceed $80.20.
The total amount of $78.20 is nearest to and less than $80.20.
So, Xandra bought (b) Guitar and (c) Cushion.
Answer(s): (a) b, c; (b) $78.20